<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>标签扩展</title>
    <link rel="stylesheet" href="../../vendor/boostrap/css/bootstrap.css">
</head>
<body>
<!--
  1. 输入框组
-->
<div class="input-group">
    <span class="input-group-addon">*</span>
    <input class="form-control"/>
    <span class="input-group-addon">*</span>
</div>
<!--按钮组-->
<div class="btn-group">


    <button class="btn btn-success">按钮1</button>
    <button class="btn btn-success">按钮1</button>
    <button class="btn btn-success">按钮1</button>
    <button class="btn btn-success">按钮1</button>

</div>
</body>
</html>